Pregnant or not

Patient: I need help. I was on depo for about 2years then got switched to the pills. My last shot was suppose to be Oct 28 but couldn’t get it and suppose to have started the pills that next Sunday but didn’t start until nov 25. I take my pills but sometimes not on time. I had a slight period dec 22-26(the very start of a new pack). Had sex the 24th & jan 2. I missed 3 pills from dec 31-jan 2 from votimming. Is there a chance I could be pregnant?

Symptoms: Slight cramping, back pain, fatigue, hungry

Doctor: